It skeeches for 15 seconds. The belts look fine they also don't appear loose
No engine stated, and this varies by ,, engine.
the belts , if new , screech for only 2 reasons
1: loose (or oil soaked, watch a guy last weak oil it to stop this)sad.
2: or the accessory its driving is seized.
id bet the cogged, timing belt will never screech, its idler might.
did you inspect all parts as you asssembled the engine.
no engine stated, so be hard for the blind to answer with savvy,
accurate answers, no?
ACCESSORY belts are tension'ed, 3 ways. (3 classes of systems)
1; manual tension. means you sit it to spec.
2: auto tension'ers
3: some look like auto type and are not.... the book for your engine tells all this.
the cam belt as special tension'g steps, did you follow those.
we cant guess what you did wrong.
nor if you even followed all steps.
below is technician loosing the auto tensioner
if the tensioner feels weak or bad, it is.
my guess, (useless) is that the cam belt is ok
but you skipped the accessory belts tension steps.
if it didnt screech before.
one more.
if it screeches, at cold start.?
you can drop a belt and start it, dead cold
and run it for 2min. like that.
screech now? (bingo)
easy no?>
cog belts dont screech. so... fly apart and shred yes.
at least this answer tells you which belt it is.
then you feel all driven points on that missing belt. for bearing damage. Play or binding.
this we do every time any belt is off'd
i can also use $5 stethoscope
and listen to all accessories. for bearing noise.
sold in all autostores, that.
if all pulleys spin free, (not engine)
and tension is ok, and not bad tension'er.
try a new belt, old belts do in fact fail for getting too hard and glaze over and then slip or make noise. Try a Gatorbelt.
try a new belt.
install it using the book instructions.
it's this simple
1: excess load. and it slips and squeals.
2: bad belt.
3: tension wrong, (no matter how)
many cars this old the tension'r spring inside
either breaks or gets weak as a cat.
EOL, end of life.
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Did new timing belt get new tensioner and idler pulleys? Water pump? Are accessory belts new also? Oil soaked?
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